Final answer:
Wing tip vortices cause turbulence and drag, as they are rotations of air created by the pressure difference over the wing.
Step-by-step explanation:
Wing tip vortices contribute to the production of turbulence and drag. These vortices are rotations of air that are created at the wing tips as the airplane moves through the air, resulting from the difference in pressure between the top and bottom of the wing. When air tries to move from the high-pressure area below the wing to the low-pressure area above the wing, it rolls off the wingtip in a spiral motion. This turbulence can be described as a turbulent wake, which most large objects, such as airplanes and sailboats, create as they move through air or water. The associated drag is known as induced drag and is a byproduct of the lift that allows an airplane to fly based on Bernoulli's principle and Newton's third law.